ARCv3: Implemented ftrace #146
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Implemented both CONFIG_FTRACE (function entry tracing) and CONFIG_FUNCTION_GRAPH_TRACER (function entry and exit tracing) for ARCv33 Signed-off-by: BrunoASMauricio <[email protected]>
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abrodkin
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Sep 24, 2023
kubeqz
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Nov 17, 2023
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As part of the request in #144, implemented both
CONFIG_FTRACE(function entry tracing) andCONFIG_FUNCTION_GRAPH_TRACER(function entry and exit tracing) for ARCv3.To use this feature, we need to first enable it in
menuconfig(activate theFTRACEandFUNCTION_GRAPH_TRACERoptions)Then, we mount the debugfs filesystem:
Select the tracer we want. For full tracing we have:
And for entry only tracing we have:
Then to see the trace, read from the '/sys/kernel/tracing/trace' file